Kevin E. Vowles

Bio: Kevin E. Vowles is an academic researcher from Queen's University Belfast. The author has contributed to research in topics: Chronic pain & Acceptance and commitment therapy. The author has an hindex of 37, co-authored 132 publications receiving 7638 citations. Previous affiliations of Kevin E. Vowles include University of Virginia Health System & National Health Service.

Acceptance of chronic pain: component analysis and a revised assessment method

Abstract: Acceptance of chronic pain entails that an individual reduce unsuccessful attempts to avoid or control pain and focus instead on participation in valued activities and the pursuit of personally relevant goals. Recent research suggests that pain-related acceptance leads to enhanced emotional and physical functioning in chronic pain patients above and beyond the influence of depression, pain intensity, and coping. In these studies, acceptance was measured using the Chronic Pain Acceptance Questionnaire (CPAQ). Preliminary analyses of the CPAQ have supported its psychometric properties. The present study sought to further refine the CPAQ by examining its factor structure and evaluating the relations of these factors to other indices of pain-related distress and disability. Although a previously demonstrated factor structure of the CPAQ was generally supported, only factors assessing (a) the degree to which one engaged in life activities regardless of the pain and (b) willingness to experience pain had adequate reliability and validity and were significantly related to the other measures of patient functioning. A revised version of the CPAQ is suggested.

Rates of opioid misuse, abuse, and addiction in chronic pain: a systematic review and data synthesis.

Abstract: Opioid use in chronic pain treatment is complex, as patients may derive both benefit and harm. Identification of individuals currently using opioids in a problematic way is important given the substantial recent increases in prescription rates and consequent increases in morbidity and mortality. The present review provides updated and expanded information regarding rates of problematic opioid use in chronic pain. Because previous reviews have indicated substantial variability in this literature, several steps were taken to enhance precision and utility. First, problematic use was coded using explicitly defined terms, referring to different patterns of use (ie, misuse, abuse, and addiction). Second, average prevalence rates were calculated and weighted by sample size and study quality. Third, the influence of differences in study methodology was examined. In total, data from 38 studies were included. Rates of problematic use were quite broad, ranging from <1% to 81% across studies. Across most calculations, rates of misuse averaged between 21% and 29% (range, 95% confidence interval [CI]: 13%-38%). Rates of addiction averaged between 8% and 12% (range, 95% CI: 3%-17%). Abuse was reported in only a single study. Only 1 difference emerged when study methods were examined, where rates of addiction were lower in studies that identified prevalence assessment as a primary, rather than secondary, objective. Although significant variability remains in this literature, this review provides guidance regarding possible average rates of opioid misuse and addiction and also highlights areas in need of further clarification.

Acceptance and commitment therapy and mindfulness for chronic pain: model, process, and progress.

Abstract: Over 30 years ago, treatments based broadly within cognitive behavioral therapy (CBT) began a rise in prominence that eventually culminated in their widespread adoption in chronic pain treatment settings. Research into CBT has proliferated and continues today, addressing questions very similar to those addressed at the start of this enterprise. However, just as it is designed to do, the process of conducting research and analyzing evidence reveals gaps in our understanding of and shortcomings within this treatment approach. A need for development seems clear. This article reviews the progress of CBT in the treatment of chronic pain and the challenges now faced by researchers and clinicians interested in meeting this need for development. It then focuses in greater detail on areas of development within CBT, namely acceptance and commitment therapy (ACT) and mindfulness-based approaches, areas that may hold potential for future progress. Three specific recommendations are offered here to achieve this progress.

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